Question:
In the electrolysis of molten NaCl, the product obtained at the cathode is:
In the electrolysis of molten NaCl, the product obtained at the cathode is:
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In molten electrolysis (no water), only cations and anions of the salt are involved — water does not interfere.
Updated On: Apr 23, 2025
- \( \text{Cl}_2 \) gas
- \( \text{Na} \) metal
- \( \text{NaOH} \)
- \( \text{H}_2 \) gas
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The Correct Option is B
Solution and Explanation
In electrolysis of molten NaCl:
- Only Na⺠and Cl⻠ions are present.
- At cathode (reduction):
\[
\text{Na}^+ + e^- \rightarrow \text{Na} \quad \text{(sodium metal)}
\]
- At anode (oxidation):
\[
2\text{Cl}^- \rightarrow \text{Cl}_2 + 2e^-
\]
So, Na metal is deposited at the cathode.
Answer: \( \boxed{\text{Na metal}} \)
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